On screen
Cast
16 credited performers
Shin Ha-kyun
Shin Cha-il
Lee Jung-ha
Koo Han-su
Jin Goo
Hwang Dae-woong
Jo A-ram
Yoon Seo-jin
Jung Moon-sung
Hwang Se-woong
Lee Do-yeop
Hwang Gun-woong
Kim Hong-pa
Seo Gil-pyo
Bek Hyun-jin
Yang Jae-seung
Jeong Dong-hwan
Bang Ki-ho
Park Soo-young
Koo Seok-gu
Woo Mi-hwa
Ahn Hye-young
이찬양
Gym Staff
Park Tae-rin
Shin Cha-il (young)
Kim Sang-bo
Audit Team Manager
Kim Mi-ji
Yong Sang-eun (Eps 11)
Kim Jung-woo
Choi Won Sik [Inseol Architecture employee]